Improvement in thill-couplings



WILLIAM 'BAILEY.

Improvement in Thill-Couplin'g.

Patented May 28,1872.

Wtuzsm:

UNITED STATES .WILLIAM BAILEY, OF UTIGA, NEW YORK.

IMPROVEMENT IN THILL-COUPLII VGS.

Specification forming part of Letters Patent No. 127,213,dated May 28,1872.

Specification describing a new and useful Improvement in ThillOoupling,invented by WILLIAM BAILEY, of Utica, in the county of Oneida and Stateof New York.

In this invention disks or boxes are applied to the ends of the pintleportion of the thilliron, and secured in corresponding cavities in theaxle-iron by a' pivoted plate, as hereinafter described.

In the accompanying drawing, Figure 1 is a side view, showing the coverover the end of the bolt raised. Fig. 2 is a top view, with the upperpart removed, showing the bolt. Fig. 3 is a plan view.

Similar letters of reference indicate corresponding parts.

A represents the thill; B, the coupling-pin. G is the cover, which ispivoted to one of the jaws, as seen in the drawing. D D represent thejaws. E is the draw-iron. The pin B is square in eross-section, andpasses through one of the jaws and into the other, and through a box ineach jaw, and also through the thill. These boxes are round, so thatthey readilyv turn in the jaws, and are marked F and G.

-As the thill is raised or lowered the boxes turn in the jaws andreceive the wear. The

cover 0 is confined to the side of the jaw by the pivot H, on which itturns, and by a dovetail fastening at the end of the jaw, seen in thedrawing. When the cover is closed, as seen in Fig. 2, it efi'ectuallyshuts in the pin and keeps it in place. When the cover is raised the pinmay be removed by means of a nail or a wire inserted in the hole I inthe opposite jaw but this pin cannot come outwhen the vehicle is in use,and only when the thills and the cover are in a particular position. Theboxes may be readily removed or renewed,

when worn sufficiently to require it, and thusa perfect joint be securedunder all circumstances.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The circular boxes F F, fitted in correspondingrecesses of the jaws D D, provided with the cover 0 and the square,headless pintle B of the thill-iron all arranged as specified.

WILLIAM BAILEY.

Witnesses:

A. LEAOH, G. E. KIRTLAND.

